<template>
  <div class="star" :class="'star-'+size">
    <span class="star-item"
          v-for="(sc, index) in starClasses"
          :class="sc" :key="index">
    </span>
  </div>
</template>

<script>
  export default {
    name: 'Star',
    props: {
      score: Number,
      size: Number
    },
    computed: {
      starClasses() {
        const {score} = this
        const scs = []
        //向scs中添加n个'on'
        const scoreInteger = Math.floor(score)
        for (let i = 0; i < scoreInteger; i++) {
          scs.push('on')
        }
        //向scs中添加0/1个'harf'
        if (score*10-scoreInteger*10>=5){
          scs.push('harf')
        }
        //向scs中添加n个'off'
        while (scs.length<5){
          scs.push('off')
        }
      }
    }
  }
</script>

<style lang="stylus" rel="stylesheet/stylus" scoped>
  @import "../../common/stylus/mixins.styl"
  .star //2x图 3x图
    float left
    font-size 0
    
    .star-item
      display inline-block
      background-repeat no-repeat
    
    &.star-48
      .star-item
        width 20px
        height 20px
        margin-right 22px
        background-size 20px 20px
        
        &:last-child
          margin-right: 0
        
        &.on
          bg-image('./images/star48_on')
        
        &.half
          bg-image('./images/star48_half')
        
        &.off
          bg-image('./images/star48_off')
    
    &.star-36
      .star-item
        width 15px
        height 15px
        margin-right 6px
        background-size 15px 15px
        
        &:last-child
          margin-right 0
        
        &.on
          bg-image('./images/star36_on')
        
        &.half
          bg-image('./images/star36_half')
        
        &.off
          bg-image('./images/star36_off')
    
    &.star-24
      .star-item
        width 10px
        height 10px
        margin-right 3px
        background-size 10px 10px
        
        &:last-child
          margin-right 0
        
        &.on
          bg-image('./images/star24_on')
        
        &.half
          bg-image('./images/star24_half')
        
        &.off
          bg-image('./images/star24_off')

</style>
